History of the Peloponnesian War

So stood the Lacedaemonians. Opposite to them, in the right wing, stood the Mantineans, because it was upon their own territory; and with them such Arcadians as were of their league. Then the thousand chosen Argives, which the city had for a long time caused to be trained for the wars at the public charge, and next to them the rest of the Argives. After these, the Cleonaeans and Orneates, their confederates. And lastly, the Athenians, with the horsemen (which were also theirs) had the left wing.

This was the order and preparation of both the armies. The army of the Lacedaemonians appeared to be the greater.